Base:
Weight: brightness
when Metalness less than 1, diffuse roughness increase give darker metal surface
Specular: (for all reflection)
Weight at 1, fully reflective; at 0 (like a rubber band surface)
Roughness: reduce to make sharper reflection (most obvious in metal surface) to make mirror surface, roughness 0, metalness 1
IOR (index of refraction): set as 1, deactivate IOR, any value below/above activate (click on the word can choose preset different material of IOR e.g. diamond, glass, ice...)
IOR won’t be seen the difference obviously until added Transmission setting
Anisotropy:(to reflect and transmit light with directional bias)
15:10
